期刊
ADVANCED ENGINEERING MATERIALS
卷 22, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.201900672
关键词
Al-Zn alloys; grain boundary sliding; high-pressure torsion; phase decomposition; ultrafine grains
资金
- Hungarian-Russian bilateral Research program (TET) [2017-2.3.4-TET-RU-2017-00005]
- Ministry of Education and Science of the Russian Federation [14.586.21.0061, RFMEFI58618X0061]
- Ministry of Human Capacities of Hungary within the ELTE University Excellence program [1783-3/2018/FEKUTSRAT]
Herein, the characterization of microstructures and mechanical properties of Al-Zn alloys ultrafine-grained (UFG) by using high pressure torsion (HPT) is surveyed. Emphasis is placed on the decomposition of the solid solution structures due to the HPT process, leading to unique mechanical and plastic properties of the UFG alloys. The decomposed microstructures, the grain boundaries wetted by Zn-rich layers, as well as the softening, grain boundary sliding (GBS) with usually high strain rate sensitivity and super-ductility of the HPT-processed samples are described and discussed. Furthermore, the innovation potential of intensive GBS at room temperature is briefly considered.
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